Astronomy and Astrophysics – Astronomy
Scientific paper
May 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21631406m&link_type=abstract
American Astronomical Society, AAS Meeting #216, #314.06; Bulletin of the American Astronomical Society, Vol. 41, p.894
Astronomy and Astrophysics
Astronomy
Scientific paper
We present simulations of magnetic flux emerging from the convection zone into the corona. These simulations are distinguished by the use of toroidal magnetic flux ropes rather than cylindrical configurations for the initial state of the ropes. As has been recently shown, the use of toroidal flux ropes prevents the photospheric foot points from separating and has been found to yield eruptions upon emerging. The concentration of magnetic flux along the polarity inversion line along with shear flows driven by the Lorentz force are found to drive significantly faster eruptions than found in previous simulations (Manchester 2004). Observations are showing in increasing detail that vigorous shearing motions in active regions proceed CMEs. Here, we examine the degree to which shear flows transport magnetic flux and energy from the convection zone to produce filament eruptions, flares and coronal mass ejections.
der Holst Bart van
Fang Fan
Manchester Ward B. IV
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